From: Olof Johansson <olof@lixom•net>
To: Stefan Roese <sr@denx•de>
Cc: linuxppc-dev@ozlabs•org, Josh Boyer <jwboyer@gmail•com>,
David Gibson <david@gibson•dropbear.id.au>
Subject: Re: Sequoia kernel crash workaround.
Date: Wed, 19 Sep 2007 14:30:24 -0500 [thread overview]
Message-ID: <20070919193024.GA28163@lixom.net> (raw)
In-Reply-To: <200709192119.48259.sr@denx.de>
On Wed, Sep 19, 2007 at 09:19:47PM +0200, Stefan Roese wrote:
> Hi Valentine,
>
> On Wednesday 19 September 2007, Valentine Barshak wrote:
> > Disabling write pipelining really helps.
> > Josh, David, what is the right place to put this workaround to?
> >
> > Is it OK to do mtdcr(PLB4A0_ACR, mfdcr(PLB4A0_ACR) & ~PLB4_WRP); in
> > arch/powerpc/boot/cuboot-sequoia.c:sequoia_fixups()?
> > or
> > should this be done in
> > arch/powerpc/platforms/44x/sequoia.c:sequoia_setup_arch()
> > with dcr_map, dcr_read/write stuff?
>
> I vote for putting it into sequoia.c, since it's very likely to happen that
> Sequoia will at one point be booted without the bootwrapper. Or perhaps it
> should go into some common code checking the PVR and disabling it when this
> 440EPx/GRx is detected, since all those boards are affected.
This is what we have setup_cpu functions in the cpu table for. Please
put it there instead of in board code.
-Olof
next prev parent reply other threads:[~2007-09-19 19:28 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-19 18:39 Sequoia kernel crash workaround Valentine Barshak
2007-09-19 19:12 ` Josh Boyer
2007-09-19 19:19 ` Stefan Roese
2007-09-19 19:30 ` Olof Johansson [this message]
2007-09-19 20:08 ` Josh Boyer
2007-09-20 16:56 ` Valentine Barshak
2007-09-20 17:25 ` Olof Johansson
2007-09-20 17:29 ` Josh Boyer
2007-09-23 8:21 ` Benjamin Herrenschmidt
2007-09-24 10:35 ` Valentine Barshak
2007-09-24 20:55 ` Benjamin Herrenschmidt
2007-09-24 21:01 ` Josh Boyer
2007-09-20 18:03 ` Olof Johansson
2007-09-20 17:32 ` Milton Miller
2007-09-20 17:55 ` [PATCH] PowerPC: add setup_cpu for 44x for processor-specific init Valentine Barshak
2007-09-20 18:13 ` Josh Boyer
2007-09-20 18:15 ` Valentine Barshak
2007-09-20 18:54 ` Kumar Gala
2007-09-20 18:55 ` Valentine Barshak
2007-09-21 1:34 ` Paul Mackerras
2007-09-20 18:02 ` Sequoia kernel crash workaround Josh Boyer
2007-09-20 18:13 ` Valentine Barshak
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